listdensityplot, black box?

*To*: mathgroup at smc.vnet.net*Subject*: [mg74828] listdensityplot, black box?*From*: "alexxx.magni at gmail.com" <alexxx.magni at gmail.com>*Date*: Sat, 7 Apr 2007 04:01:11 -0400 (EDT)

I have a rectangular grid of data (249x400) in the simple form of values 0/1, e.g: {{1, 1, 0, ......, 1, 1, 1, 0, 0, 0, 0}, ... } I read them with - lab=Import["...image.pbm"] - lab2 = lab[[1, 1]] and Show[Graphics[Raster[lab2]]] shows the image OK. Now, whenever I do: - ListDensityPlot[lab2] I get no errors, but a completely black plot - of the correct size 249x400, however. I played a little with ColorFunction and ColorOutput, but it didnt help. Do you have any idea what I'm doing wrong??? thanks for any help... Alessandro Magni

**Follow-Ups**:**RE: listdensityplot, black box?***From:*"David Annetts" <davidannetts@aapt.net.au>